Looking at its web site, it seems that
composite sampler (see post) is not actively developed anymore. The last news are from July 2011. What a pity.
Tags: audio software, sampler
Looking at its web site, it seems that
Tags: audio, audio software, composite, composite sampler, drumkits, midi program change, zynjacku
is will be a software application/system for real-time, in-performance sequencing, sampling, and looping. …” [Composite web site]. It comes with a LV2 plugin (called composite sampler) that allows to use its drumkits in zynjacku (“zynjacku is a nunchaku weapon for JACK audio synthesis. …” [zynjacku web site]), which means that you can use the sounds alone without running the whole sequencer. The drumkits are compatible to the ones used by hydrogen (“Hydrogen is an advanced drum machine for GNU/Linux. …” [hydrogen web site]).
The composite sampler documentation says that one needs to put the drumkits (or symlinks) into the according path and adjust the
default.xml file in the composite presets (see manual). Then it is possible to change through the drumkits with MIDI program change messages. I thought an automated way of preparing this setup would be useful, so I wrote the following python script. Feel free to use/alter it, no guarantee is given for anything. Comments are welcome.
""" Generates symlinks in the composite drumkit path that point to the hydrogen drumkits. Creates an according xml-file with all drumkits with GMkit as the first entry. """ __author__ = "http://linuxaudiolive.wordpress.com" from glob import glob from os import system, path xmlstart = "<?xml version=\"1.0\"?>\n\ <T:tritium xmlns:T=\"http://gabe.is-a-geek.org/tritium/xml/1/\">\n\ \t<T:presets>\n\\t\t<T:bank coarse=\"0\" fine=\"0\">" xmlend = "\t\t</T:bank>\n\\t</T:presets>\n\</T:tritium>" hydrogenDrumkitPath = "/usr/share/hydrogen/data/drumkits/" compositeDrumkitPath = path.expanduser("~/.composite/data/drumkits/") newDefaultFilename = "newDefault.xml" def makeDrumkitSymlinks(hydrogenPath, compositePath): """Puts symlinks for all entries in hydrogenPath into compositePath""" print "Creating symlinks..." names = glob(hydrogenPath+"*") for n in names: system("ln -s '"+n+"' '"+compositePath+n.split("/")[-1]+"'") def drumKitField(name, MIDIdevice): """Returns the complete xml-entry for one drumkit""" drumKitString = "\t\t\t<T:program>\n" drumKitString += "\t\t\t\t<T:midi_number>" drumKitString += str(MIDIdevice) drumKitString += "</T:midi_number>\n" drumKitString += "\t\t\t\t<T:resource>tritium:drumkits/" drumKitString += name drumKitString += "</T:resource>\n\t\t\t</T:program>" return drumKitString if __name__ == '__main__': if path.exists(newDefaultFilename): print "The file '",newDefaultFilename,"' already exists." print "Not deleting anything." print "Aborting!" else: #uncomment the following to create the symlinks #makeDrumkitSymlinks(hydrogenDrumkitPath, compositeDrumkitPath) print "Creating new default file." drumkitnames = glob(compositeDrumkitPath+"*") drumkitnames.sort() f = open(newDefaultFilename,'w') f.write(xmlstart) f.write(drumKitField("GMkit",0)) #the default entry counter = 1 for kit in drumkitnames: name = kit.split("/")[-1] if name!="GMkit": #default entry is already the first f.write(drumKitField(name, counter)) counter+=1 f.write(xmlend) f.close() print "Done. Now copy",newDefaultFilename, print "to your .composite/data/presets/default.xml"
After a fresh install of Ubuntu 12.04 followed by an install of the
ssh-meta package (which includes the ssh server and client) as well as
firestarter (to allow ssh access through the firewall) I wasn’t able to login from a remote machine. Worse:
firestarter didn’t show a denied ssh-access, which I expected after a fresh install. Fooling around with
/etc/sshd_config didn’t change a thing. Until I stumbled about a piece of information on the internet, that open my eyes.
firestarter it displayed a message saying “Failed to open the system log. No event information will be available” and “Error reading system log (null), file does not exist.”. At first I ignored them and thought, oh well, I don’t care. But I do, ’cause that is the reason for not displaying the deny-message which I needed to allow access. Another search revealed the solution:
From Ubuntu 11.04 on
rsylogd is installed rather than
firestarter was expecting. I edited
/etc/rsyslog.d/50-default.conf by changing the lines commented out that create the relevant logfile
#*.=info;*.=notice;*.=warn;\ # auth,authpriv.none;\ # cron,daemon.none;\ # mail,news.none -/var/log/messages
*.=info;*.=notice;*.=warn;\ auth,authpriv.none;\ cron,daemon.none;\ mail,news.none -/var/log/messages
Then restarting rsyslog with
sudo service rsyslog restart and restarting
firestarter the problem disappears.
(the last bit I found on askubuntu)
Tags: linux, linux audio, m-audio, ubuntu
I freshly installed Ubuntu 12.04 and the ubuntustudio meta package. To get the m-audio transit card working I followed my older post (m-audio transit and ubuntu linux), i.e. installing
madfuload which comes in the repository and adjust the udev-rules. They do not work the way they come installed.
So I used the content from corrected-madfu-rules and saved it as
/etc/udev/rules.d/41-madfuload.rules. The according file in
/lib/udev/rules.d I left untouched. The “41” instead of “42” is there because it reads “…Pick a number higher than the rules you want to override, and yours will be used. …” in
Something hang on my machine when trying the outcome so I rebooted the machine, although this might not be necessary for everybody. After that the sound card works as it used to.
Tags: audio, creative commons, free samples, free sounds, samples, sound, sound database, sounds
Just stumbled upon another database of audio files under Creative Common Licenses: ccMixter. Amazing! It collects finished remixes on one hand and material to remix on the other. Instrumental tracks, drum loops, voices and the like. They can be searched by tags or filtered by BPM. A “How I did it” tab in the extras section some artists describe what tools, processes and/or samples they used.
Happy mixing! Just make sure to follow the licenses attached to the works.
Tags: arduino, openhardware, opensource
How I got my Arduino
A week ago I had the chance to participate in a wonderful workshop on sound design given by David Strang. First, he gave the lecture “Surface Sounds” about his works. Then, in his workshop, he showed how to solder a contact microphone and how to make hydrophones (for underwater recording) and we went out to get some grips on the devices. Lecture, workshop and exhibition came to an invitation by Petra Klusmeyer. It really was good fun, and apart from that his inspiration made me to get an Arduino after all.
I got an Arduino Uno (R2) in a kit with some LEDs and other stuff so that I could immediately start with examples from the internet. A flashing LED, a dimming LED and the like. I got it fed electricity via USB but it takes away a lot of physical freedom. So I decided to practice my DIY abilities and soldering skills. I spent 2€ on a switch and a battery adapter and did some happy soldering. Notice on the picture (below, right) that one could have gotten away with less soldering, a recall to don’t drink and solder.
The kit had an LED with RGB connections. That is what most intrigued me from the start. After I understood well how to connect the wires I put the LED on a cable to attach it on my finger. With a very simple digital photo camera that has a longest exposure time of 2 seconds I wanted to take stills of the moving light with changing colours. I programmed the Arduino to flash a sequence that repeats every 2 seconds. The code is not beautiful nor flexible yet but it does the job (I might actually put the code as a comment to the post).
Pressing the camera button at the right moment I got a few nice pictures taken.
Tags: music theory, online manuals
As a mostly autodidactic musician the concepts off scales, intervals, chords or rhythms can be quite mixed up, so when you work together with others it can get a bit complicated sometimes. Reading one’s way through encyclopaedias is lengthy, so I find it nice to find a book about all that, where knowledgeable people explain the whole picture. One place for such is certainly wikibooks. Users are working on a book on Music Theory since something like 2004 and it has gained quite a size. I was happy to see chapters on
Some other chapters are still quite short and need our efforts to be as good as the two mentioned ones.
Happy reading and extending!